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cot(38)=tan(2x)

Soluzione

cot (3 8^{\circ}) = tan (2 x)

x = 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

Radianti

x = \frac{13 π}{90} + \frac{π}{2} n

Fasi della soluzione

cot (3 8^{\circ}) = tan (2 x)

Scambia i lati

tan (2 x) = cot (3 8^{\circ})

Applica le proprietà inverse delle funzioni trigonometriche

tan (2 x) = cot (3 8^{\circ})

Soluzioni generali per

tan (2 x) = cot (3 8^{\circ})

tan (x) = a \Rightarrow x = arctan (a) + 18 0^{\circ} n

2 x = arctan (cot (3 8^{\circ})) + 18 0^{\circ} n

2 x = arctan (cot (3 8^{\circ})) + 18 0^{\circ} n

Risolvi

2 x = arctan (cot (3 8^{\circ})) + 18 0^{\circ} n : x = 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

2 x = arctan (cot (3 8^{\circ})) + 18 0^{\circ} n

Semplificare

arctan (cot (3 8^{\circ})) + 18 0^{\circ} n : 5 2^{\circ} + 18 0^{\circ} n

arctan (cot (3 8^{\circ})) + 18 0^{\circ} n

arctan (cot (3 8^{\circ})) = 5 2^{\circ}

arctan (cot (3 8^{\circ}))

Riscrivere utilizzando identità trigonometriche:

cot (3 8^{\circ}) = tan (5 2^{\circ})

cot (3 8^{\circ})

tan (9 0^{\circ} - x) = cot (x)

= tan (9 0^{\circ} - 3 8^{\circ})

= tan (5 2^{\circ})

= arctan (tan (5 2^{\circ}))

Usa la proprietà inversa delle funzioni trigonometriche:

5 2^{\circ}

arctan (tan (5 2^{\circ}))

Per

- 9 0^{\circ} < x < 9 0^{\circ}, a rc t an (t an (x)) = x

- 9 0^{\circ} < 5 2^{\circ} < 9 0^{\circ}

= 5 2^{\circ}

= 5 2^{\circ}

= 5 2^{\circ} + 18 0^{\circ} n

2 x = 5 2^{\circ} + 18 0^{\circ} n

Dividere entrambi i lati per

2

2 x = 5 2^{\circ} + 18 0^{\circ} n

Dividere entrambi i lati per

2

\frac{2 x}{2} = \frac{5 2 ^{\circ}}{2} + \frac{18 0 ^{\circ} n}{2}

Semplificare

\frac{2 x}{2} = \frac{5 2 ^{\circ}}{2} + \frac{18 0 ^{\circ} n}{2}

Semplificare

\frac{2 x}{2} : x

\frac{2 x}{2}

Dividi i numeri:

\frac{2}{2} = 1

= x

Semplificare

\frac{5 2 ^{\circ}}{2} + \frac{18 0 ^{\circ} n}{2} : 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

\frac{5 2 ^{\circ}}{2} + \frac{18 0 ^{\circ} n}{2}

\frac{5 2 ^{\circ}}{2} = 2 6^{\circ}

\frac{5 2 ^{\circ}}{2}

Applica la regola delle frazioni:

\frac{\frac{b}{c}}{a} = \frac{b}{c \cdot a}

= \frac{234 0 ^{\circ}}{45 \cdot 2}

Moltiplica i numeri:

45 \cdot 2 = 90

= 2 6^{\circ}

= 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

x = 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

x = 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

x = 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

x = 2 6^{\circ} + \frac{18 0 ^{\circ} n}{2}

cos (θ) = 0.8126

cos (θ) = - \frac{4}{5}, tan (θ) < 0

16 sin^{2} (x) = 8

cos (x) = \frac{( 2 )}{2}

csc^{2} (x) = 5 csc (x) + 6